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WO2017015199A1 - Détection et quantification rapides de corrosion et d'érosion de surface et de volume dans des métaux et des matériaux non métalliques, à système de surveillance intégré - Google Patents

Détection et quantification rapides de corrosion et d'érosion de surface et de volume dans des métaux et des matériaux non métalliques, à système de surveillance intégré Download PDF

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Publication number
WO2017015199A1
WO2017015199A1 PCT/US2016/042766 US2016042766W WO2017015199A1 WO 2017015199 A1 WO2017015199 A1 WO 2017015199A1 US 2016042766 W US2016042766 W US 2016042766W WO 2017015199 A1 WO2017015199 A1 WO 2017015199A1
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WIPO (PCT)
Prior art keywords
connections
bulk
erosion
corrosion
impedance
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Ceased
Application number
PCT/US2016/042766
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English (en)
Inventor
Cumaraswamy VIPULANANDAN
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University of Houston System
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University of Houston System
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Publication date
Application filed by University of Houston System filed Critical University of Houston System
Priority to US15/745,596 priority Critical patent/US10690586B2/en
Publication of WO2017015199A1 publication Critical patent/WO2017015199A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/04—Corrosion probes
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/02—Electrochemical measuring systems for weathering, corrosion or corrosion-protection measurement
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/20—Investigating the presence of flaws
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/24—Investigating the presence of flaws

Definitions

  • the present invention relates to non-destructive direct measurement for detection and quantification of surface and bulk corrosion and erosion real-time in metals, non-metallic materials (such as plastics, polymers, cement, concrete, ceramics, rocks and soils) and composites in the field and laboratory.
  • non-metallic materials such as plastics, polymers, cement, concrete, ceramics, rocks and soils
  • the present disclosure relates generally to a system and method for detecting and quantifying the presence and amount of bulk and surface corrosion and erosion real-time, in both metallic and non-metallic materials (such as plastics, polymers, cement, concrete, ceramics, rocks and soils) and composites in the field and laboratory.
  • metallic and non-metallic materials such as plastics, polymers, cement, concrete, ceramics, rocks and soils
  • the system and method measure and characterize the electrical properties of the materials and interfaces being studied, in order to detect surface and bulk corrosion and erosion.
  • understanding the electrical properties at the interface level between steel and cement helps reveal the integrity of the interface condition.
  • the presence of surface and bulk corrosion and erosion products is one of the problems that undermines the integrity of the interaction between steel and cement.
  • the electrical properties at interface level between oil well cement and corroded steel bar, and oil well cement are used to detect the presence of surface and bulk corrosion and erosion at the interface.
  • Advantages of the system and method include (1) its use as a measurement method, (2) rapid non-destructive contacts with or without an adapter, (3) quantification of surface and bulk corrosion and erosion and identification of the surface and bulk corrosion and erosion parameter, (4) applicability to metals, non-metals (including plastic) and interfaces (such as coating/metal), and (5) high sensitivity for small scale to large scale applications.
  • Figure 1 shows a general schematic of a test for measuring surface and bulk corrosion and erosion using an impedance analyzer precision LCR meter.
  • Figure 2 shows a diagram of wires imbedded on a sample in order to examine the electrical properties of the sample at various locations.
  • Figure 3 shows an equivalent circuit adopted based on expected behavior of the material being studied.
  • Figure 4 shows a bode plot of real impedance vs. frequency for models and for experimental samples.
  • Figure 5 shows an equivalent circuit adopted based on alternate expected behavior of the material being studied (Case 1).
  • Figure 6 shows an equivalent circuit adopted based on alternate expected behavior of the material being studied (Case 2).
  • Figure 7 shows a comparison of typical responses of impedance vs. frequency of different equivalent circuits.
  • Figure 8 shows a general schematic of a test for measuring surface and bulk corrosion and erosion of a specimen using an impedance analyzer precision LCR meter with various quantifying electrical parameters.
  • the present disclosure relates to systems that will detect and quantify surface and bulk corrosion and erosion in real-time in metals and non-metals that are that are total or part of the load bearing or non-load bearing structures.
  • the systems and methods involve measuring and characterizing the electrical resistance and capacitance (or inductance) of the materials and their interfaces, preferably by using an impedance analyzer precision LCR meter, which measures the inductance (L), capacitance (C) and resistance (R).
  • Figure 1 shows a general schematic of the test, in which the contacts may be magnets and the adapters, which are optional, may be steel or other metal attracted by the magnet on the opposite side of the material.
  • the materials may be cement and steel, or any suitable materials, including plastics.
  • the material may be a composite material also including a bulk material, which may be a coating, and a metal or non-metal reinforcement material.
  • the contacts themselves are temporary and non-destructive and can be used in both the laboratory and in the field.
  • the contacts or connections can be attached at various distances and on various sides of the material for measuring and collecting data on electrical resistance, capacitance, and inductance of the material.
  • the spacing can be from millimeters to kilometers. Changing the distance between the contacts allows for changing the measurements in various directions (by length, width, and thickness) and for obtaining useful information on the electrical properties of the material.
  • the spacing between the connections can also help locate the actual point of corrosion or erosion.
  • Data is measured and collected on the electrical properties of the material. From this collected data, including bulk and surface electrical properties, impedance versus frequency of the material is calculated. Then, the calculated data is analyzed in order to determine the presence and amount of bulk and surface corrosion and erosion. A large amount of data is collected with varying frequency of measurement. The data can be processed real-time to determine the electrical properties and to detect surface and bulk corrosion and erosion point by point (with a spacing from millimeters to kilometers between connections) and to quantify the corrosion and erosion in three orthogonal directions from location to location. EXAMPLE 1. CHARACTERIZATION
  • Cement specimens embedding two kinds of steel were prepared for laboratory tests to characterize the electrical properties of the interface between steel and cement.
  • the size of the specimens was cylindrical with diameter of 2 inches and height of 4 inches.
  • Corroded and non-corroded steel were used with the size of #3 and #4 respectively. Both steel types had a length of 5 inches.
  • Specimens were instrumented with 5 silver-painted wires connected to the embedded steel and 2 silver-painted wires connected to the cement (illustrated in Figure 2).
  • the electrical resistances and capacitance of the cement, steel, and transitional contact between the cement and steel were measured with impedance analyzer precision LCR meter.
  • ⁇ is the angular frequency of the applied signal.
  • 3 ⁇ 4 is the resistance of the bulk material cement.
  • R c and C c are the resistance and capacitance of the contacts on the metal.
  • Ri and Ci are the resistance and capacitance of the contacts on the interface between concrete and metal.
  • the applied signal was carried out with frequency range of 20 Hz to 300 kHz.
  • a bode plot of the real impedance versus frequency is shown in Figure 4. From the bode plot, it can be seen that the difference in electrical resistance of corroded and non-corroded specimens was captured experimentally, particularly that of the interface between the steel and cement, where corrosion and erosion products are present. The experimental data was consistent with the model for both corroded and non-corroded specimens. The results demonstrate that characterization of electrical properties between steel and cement can be accomplished and can be used to characterize the presence of surface and bulk corrosion and erosion between steel and cement. This electrical and relatively simple test method could be used effectively in determining the presence of corrosion and erosion at the steel-cement interface of any materials.
  • the contacts in Figure 1 can be placed at points 1 and 2 of the schematic of Figure 2 (without any adapters) to measure the surface and bulk corrosion and erosion in the steel.
  • To get the interface corrosion, represented by Ri measurements will be done between point 1 and wire 6, point 1 and wire 7, point 2 and wire 6, point 2 and wire 7. The results will be used to determine Ri and . If the wire (at 6 & 7) is not available, an alternative is to place a metallic horse clamp around the specimen and then place the magnet on the metallic tape. This will give a new contact. R c and C c will not affect the Ri and Ci.
  • R (which represents the corrosion inside the steel-bulk) will be less than 1 ⁇ based on the size of the steel element being tested. If the L (shown in Figure 8) is in a few millimeters then the R b will be in milli-ohms. The surface corrosion will be represented by R c and C c . If no corrosion, R C C C (a new parameter) will be less than 10 "6 ohm- Farad (Q.F). Also, R c and C c will be very small.
  • R b will be of the order of KOhm to GOhm.
  • R C C C will be 10 "2 QF or higher based on the material being tested.
  • ⁇ is the angular frequency of the applied signal.
  • Figure 7 shows a comparison of typical responses for the equivalent circuits for Case 1 and Case 2. Testing for surface and bulk corrosion and erosion (material or interface) indicated that Case 2 represented the behavior in the frequency range of 20 Hz to 300 kHz. at a frequency of 300 kHz.
  • Figure 8 shows an additional schematic of the test, in which 3 ⁇ 4 represents the bulk material with a corroded specimen. If no corrosion or erosion the resistance for metals will be in milli-Ohms. Based on the degree of corrosion and erosion it will be in kOhms or Megaohms. , is very high for plastic materials. The 3 ⁇ 4 could be very low (Phase angle -90°).
  • R c represents the contact resistance for the magnet. It will represent the surface conditions. If there is surface or bulk corrosion or erosion then R c will be much higher.
  • R C C C or Rid is the interface surface or bulk corrosion and erosion. This is a new quantification representing the interface (contact) condition.
  • the spacing distance between contacts (L) can be in millimeters to meters and more.
  • R b and Ri can be determined in different directions and different thickness of the material to provide information about the surface and bulk corrosion and erosion direction.
  • capacitance (C) can be substituted or replaced with inductance.

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  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Biochemistry (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ecology (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Environmental Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Abstract

L'invention concerne des systèmes et des procédés pour la détection et la quantification en temps réel de la corrosion et de l'érosion de surface et de volume dans des matériaux, qui consistent à mesurer et à caractériser les résistances électriques, les capacités, et/ou les inductances des matériaux et de leurs interfaces, de préférence à l'aide d'un dispositif de mesure LCR de précision d'analyseur d'impédance. Les matériaux peuvent être des métaux, des non métaux (tels que des plastiques, des polymères, des ciments, du béton, des céramiques, des rochers et des sols) et des matériaux composites avec divers types de constituants de matériau (tels que des métaux, des plastiques, des polymères, et des ciments).
PCT/US2016/042766 2015-07-21 2016-07-18 Détection et quantification rapides de corrosion et d'érosion de surface et de volume dans des métaux et des matériaux non métalliques, à système de surveillance intégré Ceased WO2017015199A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/745,596 US10690586B2 (en) 2015-07-21 2016-07-18 Rapid detection and quantification of surface and bulk corrosion and erosion in metals and non-metallic materials with integrated monitoring system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201562195233P 2015-07-21 2015-07-21
US62/195,233 2015-07-21

Publications (1)

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WO2017015199A1 true WO2017015199A1 (fr) 2017-01-26

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US (1) US10690586B2 (fr)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108956435A (zh) * 2018-06-12 2018-12-07 中国石油天然气股份有限公司 一种高温高压储层溶蚀的模拟实验方法和装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5180969A (en) * 1992-02-04 1993-01-19 Southwest Research Institute Detection of reinforcing steel corrosion in concrete structures using non-linear harmonic and intermodulation wave generation
US5966011A (en) * 1995-08-25 1999-10-12 Jentek Sensors, Inc. Apparatus for measuring bulk materials and surface conditions for flat and curved parts
WO2008051495A2 (fr) * 2006-10-20 2008-05-02 Shell Oil Company Systèmes et procédés utilises dans le traitement de formations souterraine
US9020099B1 (en) * 2014-12-03 2015-04-28 King Abdulaziz University Miniaturized pipe inspection system for measuring corrosion and scale in small pipes
WO2015061487A2 (fr) * 2013-10-22 2015-04-30 Jentek Sensors, Inc. Procédé et appareil de mesure de l'état de matériau

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008083409A1 (fr) * 2007-01-03 2008-07-10 University Of Florida Research Foundation, Inc. Système pour l'évaluation de l'état de canalisation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5180969A (en) * 1992-02-04 1993-01-19 Southwest Research Institute Detection of reinforcing steel corrosion in concrete structures using non-linear harmonic and intermodulation wave generation
US5966011A (en) * 1995-08-25 1999-10-12 Jentek Sensors, Inc. Apparatus for measuring bulk materials and surface conditions for flat and curved parts
WO2008051495A2 (fr) * 2006-10-20 2008-05-02 Shell Oil Company Systèmes et procédés utilises dans le traitement de formations souterraine
WO2015061487A2 (fr) * 2013-10-22 2015-04-30 Jentek Sensors, Inc. Procédé et appareil de mesure de l'état de matériau
US9020099B1 (en) * 2014-12-03 2015-04-28 King Abdulaziz University Miniaturized pipe inspection system for measuring corrosion and scale in small pipes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108956435A (zh) * 2018-06-12 2018-12-07 中国石油天然气股份有限公司 一种高温高压储层溶蚀的模拟实验方法和装置

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US20180209893A1 (en) 2018-07-26
US10690586B2 (en) 2020-06-23

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